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Comparative Study
. 2012 Sep-Oct;20(5):522-5.
doi: 10.1590/s1678-77572012000500005.

In vivo accuracy of conventional and digital radiographic methods in confirming root canal working length determination by Root ZX

Fernando Accorsi Orosco  1 , Norberti Bernardineli, Roberto Brandão Garcia, Clovis Monteiro Bramante, Marco Antonio Húngaro Duarte, Ivaldo Gomes de Moraes
Affiliations
Comparative Study

In vivo accuracy of conventional and digital radiographic methods in confirming root canal working length determination by Root ZX

Fernando Accorsi Orosco et al. J Appl Oral Sci. 2012 Sep-Oct.

Abstract

Objectives: To compare, in vivo, the accuracy of conventional and digital radiographic methods in determining root canal working length.

Material and methods: Twenty-five maxillary incisor or canine teeth from 22 patients were used in this study. Considering the preoperative radiographs as the baseline, a 25 K file was inserted into the root canal to the point where the Root ZX electronic apex locator indicated the APEX measurement in the screen. From this measurement, 1 mm was subtracted for positioning the file. The radiographic measurements were made using a digital sensor (Digora 1.51) or conventional type-E films, size 2, following the paralleling technique, to determine the distance of the file tip and the radiographic apex.

Results: The Student "t" test indicated mean distances of 1.11 mm to conventional and 1.20 mm for the digital method and indicated a significant statistical difference (p<0.05).

Conclusions: The conventional radiographic method was found to be superior to the digital one in determining the working length of the root canal.

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Figures

Figure 1
Figure 1
A: Detail of the anatomy of the apical third; B: Conventional radiograph of root canal working length determination
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References

    1. Akdeniz BG, Sogur E. An ex vivo comparison of conventional and digital radiography for perceived image quality of root fillings. Int Endod J. 2005;38:397–401. - PubMed
    1. Almenar Garcóa A, Forner Navarro L, Ubet Castelló V, Miñana Laliga R. Evaluation of a digital radiography to estimate working length. J Endod. 1997;23:363–365. - PubMed
    1. Bernardes RA, Duarte MAH, Vasconcelos BC, Moraes IG, Bernardineli N, Garcia RB, et al. Evaluation of precision of length determination with 3 electronic apex locators: Root ZX, Elements Diagnostic Unit and Apex Locator, and RomiAPEX D-30. Oral Surg Oral Med Oral Pathol Oral Radiol Endod. 2007;104:e91–e94. - PubMed
    1. Borg E, Attaelmanan A, Gröndahl HG. Subjective image quality of solid-state and photostimulable phosphor systems for digital intraoral radiography. Dentomaxillofac Radiol. 2000;29:70–75. - PubMed
    1. Camargo EJ, Ordinola-Zapata R, Medeiros PL, Bramante CM, Bernardineli N, Garcia RB, et al. Influence of preflaring on the accuracy of length determination with four electronic apex locators. J Endod. 2009;35:1300–1302. - PubMed

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